Infectious Hematopoietic Necrosis

Infectious Hematopoietic Necrosis is a highly contagious viral disease of fish, especially rainbow and steelhead trout and Atlantic and Pacific salmon. The disease is spread through contaminated water, feed, or direct fish-to-fish contact where the virus enters through the mouth or gills. The mortality rate of Infectious Hematopoietic Necrosis is high in fry and juvenile fish.